package edu.pku.sei.transformation.mtparser;

/**
 * is always implemented by <b>AstToken</b>. It is also implemented by:
 *<b>
 *<ul>
 *<li>UserDefinedVarExpr
 *<li>PredefinedVarExpr0
 *<li>PredefinedVarExpr1
 *<li>PredefinedVarExpr2
 *<li>PredefinedVarExpr3
 *</ul>
 *</b>
 */
public interface IVariableExpr extends IAtomicExpr {}


